Cisco IOS XE up to 3.18.1S on ASR 9000 Transaction Language 1 memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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9.6$5k-$25k0.00

Summaryinfo

A vulnerability was found in Cisco IOS XE 3.17.0S/3.17.1S/3.17.2S/3.18.0S/3.18.1S on ASR 9000. It has been rated as very critical. Affected by this vulnerability is an unknown functionality of the component Transaction Language 1. This manipulation causes memory corruption. This vulnerability is tracked as CVE-2016-6441. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Cisco IOS XE 3.17.0S/3.17.1S/3.17.2S/3.18.0S/3.18.1S on ASR 9000 (Router Operating System). It has been declared as very critical. Affected by this vulnerability is an unknown function of the component Transaction Language 1. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability.

The bug was discovered 11/02/2016. The weakness was disclosed 11/02/2016 with Cisco as cisco-sa-20161102-tl1 as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. The public release has been coordinated in cooperation with Cisco. This vulnerability is known as CVE-2016-6441 since 07/26/2016. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 09/29/2022).

We expect the 0-day to have been worth approximately $100k and more. The vulnerability scanner Nessus provides a plugin with the ID 94680 (Cisco IOS XE TL1 Request Handling RCE (cisco-sa-20161102-tl1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO and running in the context l.

Upgrading to version 3.17.3S or 3.18.2S eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (94680) and SecurityFocus (BID 94072†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 94680
Nessus Name: Cisco IOS XE TL1 Request Handling RCE (cisco-sa-20161102-tl1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 863978
OpenVAS Name: Cisco ASR 900 Series Aggregation Services Routers Buffer Overflow Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: IOS XE 3.17.3S/3.18.2S

Timelineinfo

07/26/2016 🔍
11/02/2016 +99 days 🔍
11/02/2016 +0 days 🔍
11/02/2016 +0 days 🔍
11/02/2016 +0 days 🔍
11/03/2016 +1 days 🔍
11/03/2016 +0 days 🔍
11/10/2016 +7 days 🔍
09/29/2022 +2149 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20161102-tl1
Organization: Cisco
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2016-6441 (🔍)
GCVE (CVE): GCVE-0-2016-6441
GCVE (VulDB): GCVE-100-93247

OVAL: 🔍

SecurityFocus: 94072 - Cisco IOS XE Software CVE-2016-6441 Buffer Overflow Vulnerability
SecurityTracker: 1037179

scip Labs: https://www.scip.ch/en/?labs.20150108

Entryinfo

Created: 11/03/2016 10:15
Updated: 09/29/2022 10:30
Changes: 11/03/2016 10:15 (72), 06/02/2019 16:03 (14), 09/29/2022 10:30 (4)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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